ASTROSAT CZTI

Data Quality Report

Orbit 20180808_T02_082T01_9000002286_level2

Creation date: 2018-08-16T17:13:50.188021
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_082T01_9000002286cztM0_level2_bc.evt modeM0/AS1T02_082T01_9000002286cztM0_level2_quad_clean.evt
Size (bytes)1,584,835,200558,979,200
Size1.5 GB 533.1 MB
Events in quadrant A10,900,2423,533,112
Events in quadrant B11,447,1983,547,482
Events in quadrant C9,822,5863,464,869
Events in quadrant D12,827,6193,367,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0973470
B0995720
C0941440
D01026070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439749012.048938%
B4397410352.353664%
C439745751.307591%
D439748531.939783%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 48980 43977 191 191 0.39% 0.43%
B 48980 43975 100 100 0.20% 0.23%
C 48980 43974 0 0 0.00% 0.00%
D 48980 43976 128 128 0.26% 0.29%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 238 2077599 4306.67 2208 2167 481.9
A 9 143 105152 213.7 2208 2167 481.9
A 14 237 80020 161.55 2208 2167 481.9
B 10 245 1465197 3452.94 2223 2165 423.7
B 3 209 190164 443.7 2223 2165 423.7
B 0 197 189573 442.31 2223 2165 423.7
C 3 233 1534894 3068.62 2130 2118 499.5
C 10 22 26069 47.95 2130 2118 499.5
C 13 61 12854 21.49 2130 2118 499.5
D 1 52 1816539 3635.0 2169 2094 499.2
D 2 33 617056 1231.99 2169 2094 499.2
D 5 222 592267 1182.33 2169 2094 499.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter